Functional Outcomes in Conservatively vs Surgically Treated Cerebellar Infarcts

Area of Science:

• Neurosurgery
• Neurology
• Critical Care Medicine

Background:

• Decompressive surgery is recommended for severe cerebellar infarcts with swelling per AHA/ASA guidelines.
• A lack of standardized definitions for swelling and infarct volume complicates surgical decision-making.

Purpose of the Study:

• To compare functional outcomes between surgical and conservative management of cerebellar infarcts.
• To identify patient subgroups who may benefit from specific treatment modalities.

Main Methods:

• Retrospective multicenter cohort study of 531 patients with cerebellar infarcts in Germany (2008-2021).
• Propensity score matching was used to compare surgical (posterior fossa decompression) versus conservative (medical) management.
• Functional outcomes were assessed using the modified Rankin Scale (mRS) at discharge and 1-year follow-up.

Main Results:

• No significant difference in favorable outcomes (mRS 0-3) at discharge or 1-year follow-up between surgical and conservative groups overall.
• Surgical treatment was associated with improved 1-year outcomes in patients with cerebellar infarct volumes ≥35 mL (OR, 4.8; P=.03).
• Conservative management was associated with favorable 1-year outcomes in patients with infarct volumes <25 mL (OR, 0.2; P=.047).

Conclusions:

• Overall, decompressive surgery did not improve functional outcomes for cerebellar infarcts compared to conservative management.
• Treatment decisions for cerebellar infarcts should consider infarct volume, with surgery potentially benefiting larger volumes and conservative care smaller volumes.
• Further research is needed to refine criteria for surgical intervention in cerebellar infarcts.